<div class='definition'><pre>Dynamic directive argument</pre></div>
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<p>It is possible to use a JavaScript expression in a directive argument by wrapping it with square brackets. The expression's evaluated value will be used as the final value for the argument.</p>
<p>Dynamic arguments are expected to evaluate to a string, with the exception of <code>null</code>. The special value <code>null</code> can be used to explicitly remove the binding. Any other non-string value will trigger a warning.</p>
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<tr><td valign='top' class='section'><p>Library:</td><td valign='top'><p>vue@2.6.10</td>
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